U.S. President Barack Obama on Friday surveyed the country's most horrific tornado damage in decades, offering comfort to victims and government assistance to the southeastern United States following storms that have killed about 300 people, mostly in the state of Alabama. Expressing amazement at the destruction surrounding him in Tuscaloosa, Alabama, Obama stepped through the wreckage left by tornadoes and pledged help to those who survived but lost their homes. "I've never seen devastation like this," the president said as he and first lady Michelle Obama walked the streets of a destroyed neighborhood. "We're going to make sure you're not forgotten." Obama arrived in Tuscaloosa earlier on Friday after viewing a long swath of tornado damage from the presidential airplane. He immediately began lengthy conversations with Alabama Governor Robert Bentley and Tuscaloosa Mayor Walt Maddox before departing to survey damage and spend time with local officials and families.